JPS6236482U - - Google Patents
Info
- Publication number
- JPS6236482U JPS6236482U JP1985128571U JP12857185U JPS6236482U JP S6236482 U JPS6236482 U JP S6236482U JP 1985128571 U JP1985128571 U JP 1985128571U JP 12857185 U JP12857185 U JP 12857185U JP S6236482 U JPS6236482 U JP S6236482U
- Authority
- JP
- Japan
- Prior art keywords
- reversible counter
- output signal
- control device
- controlled oscillator
- voltage controlled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002441 reversible effect Effects 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/08—Track changing or selecting during transducing operation
- G11B21/081—Access to indexed tracks or parts of continuous track
- G11B21/083—Access to indexed tracks or parts of continuous track on discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
- G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
- G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
- G11B5/553—Details
- G11B5/5547—"Seek" control and circuits therefor
Landscapes
- Moving Of The Head To Find And Align With The Track (AREA)
- Control Of Position Or Direction (AREA)
- Control Of Stepping Motors (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985128571U JPS6236482U (US20030157376A1-20030821-M00001.png) | 1985-08-23 | 1985-08-23 | |
US06/899,812 US4797757A (en) | 1985-08-23 | 1986-08-25 | Servo head positioner with pulse adjusting circuitry |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985128571U JPS6236482U (US20030157376A1-20030821-M00001.png) | 1985-08-23 | 1985-08-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6236482U true JPS6236482U (US20030157376A1-20030821-M00001.png) | 1987-03-04 |
Family
ID=14988046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1985128571U Pending JPS6236482U (US20030157376A1-20030821-M00001.png) | 1985-08-23 | 1985-08-23 |
Country Status (2)
Country | Link |
---|---|
US (1) | US4797757A (US20030157376A1-20030821-M00001.png) |
JP (1) | JPS6236482U (US20030157376A1-20030821-M00001.png) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4933786A (en) * | 1988-09-21 | 1990-06-12 | Maxtor Corporation | Fault tolerant index patterns and decoding means |
JPH05182131A (ja) * | 1991-06-07 | 1993-07-23 | Minnesota Mining & Mfg Co <3M> | マルチチャンネルヘッドアセンブリと書き込み装置と磁気記録媒体 |
US5418670A (en) * | 1991-07-29 | 1995-05-23 | Eastman Kodak Company | Magnetic recording medium having a servo pattern of the intermittent type with compensation for suppressing self-generated residual fields |
KR970010638B1 (ko) * | 1994-05-11 | 1997-06-28 | 삼성전자 주식회사 | 서보 어드레스 마크 검출 보상 회로 |
KR100194027B1 (ko) * | 1996-02-22 | 1999-06-15 | 윤종용 | 섹터 펄스 생성방법과 회로 |
KR101417197B1 (ko) * | 2010-11-30 | 2014-07-08 | 엘에스산전 주식회사 | Plc 위치 결정 장치 및 방법과 이를 이용한 plc 시스템 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3201781A (en) * | 1962-07-23 | 1965-08-17 | Hewlett Packard Co | Analog to digital transducers |
US3868677A (en) * | 1972-06-21 | 1975-02-25 | Gen Electric | Phase-locked voltage-to-digital converter |
GB2039078B (en) * | 1978-12-27 | 1982-11-24 | Ibm | Sampled data servo positioning system |
US4414586A (en) * | 1980-10-07 | 1983-11-08 | Victor Company Of Japan, Ltd. | Pilot signal recording and reproducing system |
US4462053A (en) * | 1981-07-02 | 1984-07-24 | Irwin International, Inc. | Method for controlling a disc head |
US4542428A (en) * | 1982-10-01 | 1985-09-17 | Matsushita Electric Industrial Co., Ltd. | Disk for measuring off-track quantity of magnetic head, and measuring apparatus using the disk |
US4516162A (en) * | 1983-04-21 | 1985-05-07 | Magnetic Peripherals Inc. | Method for verifying servo data |
US4586094A (en) * | 1984-03-13 | 1986-04-29 | Irwin Magnetic Systems, Inc. | Method and apparatus for pre-recording tracking information on magnetic media |
US4530019A (en) * | 1984-06-04 | 1985-07-16 | Dma Systems | Servo pattern |
-
1985
- 1985-08-23 JP JP1985128571U patent/JPS6236482U/ja active Pending
-
1986
- 1986-08-25 US US06/899,812 patent/US4797757A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US4797757A (en) | 1989-01-10 |